Question

How do you find the least common multiple of 15 and 2?

Answer 1

LCM = 30

Explanation:

• Divide the larger number by the smaller number. If it divides exactly then the larger number is the LCM.

• Repeat with multiples of the larger number ( multiply by 2, 3, 4, 5, 6, 7, 8 and 9 ) until exact division is obtained.

`rArr color(red)(15)÷2 color(white)(xxx)X`

`color(red)(15)` is not the LCM

Now try the multiple `2xx15=color(red)(30)`

`rArrcolor(red)(30)÷2 color(white)(xxx) ✔︎`

`rArrcolor(red)(30)` is the LCM.